RDK-138 Power Integrations, RDK-138 Datasheet - Page 19

• Manufacturer Part Number: RDK-138
• Description: KIT REF DESIGN 1.2W PS TN FAMILY
• Manufacturer: Power Integrations

Specifications of RDK-138

• Mfg Application Notes: LinkSwitch-TN Design Guide, AN-37
• Main Purpose: AC/DC, Non-Isolated
• Outputs And Type: 2, Non-Isolated
• Power - Output: 1.2W
• Voltage - Output: 12V, 5V
• Current - Output: 80mA, 50mA
• Voltage - Input: 85 ~ 265VAC
• Regulator Topology: Buck
• Frequency - Switching: 66kHz
• Board Type: Fully Populated
• Utilized Ic / Part: LNK304
• Product: Accessories & Kits
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Other names: 596-1197

Figure 17 – Transient Response, 85 VAC.
9.4 Load Transient Response (75% to 100% Load Step)
In the figures shown below, signal averaging was used to better enable viewing the load
transient response. The oscilloscope was triggered using the load current step as a
source. Since the output switching and line frequency occur essentially at random with
respect to the load transient, contributions to the output ripple from these sources will
average out, leaving the contribution only from the load step response.
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75-100-75% Load Step. On 12 V
Output.
Upper: 12 V Output, 10 mV / div.
Lower: 12 V Load Current 50 mA / div.
Timebase: 5 ms / div.
Figure 18 – Transient Response, 265 VAC.
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75-100-75% Load Step On 12 V Output.
Upper: 5 V Output, 10 mV / div.
Bottom: 12 V Load Current 50 mA / div.
Timebase: 5 ms / div.
Power Integrations
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